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annotate dep/animia/src/win/wayland.cc @ 213:58e81b42a0d6

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dep/animia: win/x11: find toplevels WAY faster completely different approach. oops!
author Paper <mrpapersonic@gmail.com>
date Sun, 07 Jan 2024 11:11:27 -0500
parents 9f3534f6b8c4
children 8a482049b968
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1 #include "animia/win/wayland.h"
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2 #include "animia/win.h"
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3 #include "animia.h"
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4
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5 #include <iostream>
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6 #include <cstring>
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7
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8 #include "animia/win/wayland/ext-foreign-toplevel-list-v1.h"
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9 #include <wayland-client.h>
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10
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11 namespace animia::internal::wayland {
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12
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13 static void noop() {}
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14
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15 /* ext_foreign_handle stuff */
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16 static void ext_foreign_handle_handle_app_id(void* data, struct ext_foreign_toplevel_handle_v1* handle, const char* app_id) {
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17 if (app_id)
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18 reinterpret_cast<Window*>(data)->class_name = app_id;
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19 }
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20
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21 static void ext_foreign_handle_handle_title(void* data, struct ext_foreign_toplevel_handle_v1* handle, const char* title) {
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22 if (title)
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23 reinterpret_cast<Window*>(data)->text = title;
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24 }
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25
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26 static void ext_foreign_handle_handle_done(void* data, struct ext_foreign_toplevel_handle_v1* handle) {
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27 if (handle)
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28 ext_foreign_toplevel_handle_v1_destroy(handle);
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29 }
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30
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31 static void ext_foreign_handle_handle_closed(void*, struct ext_foreign_toplevel_handle_v1*) {}
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32 static void ext_foreign_handle_handle_identifier(void*, ext_foreign_toplevel_handle_v1*, const char*) {}
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33
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34 static const struct ext_foreign_toplevel_handle_v1_listener ext_handle_listener = {
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35 .closed = ext_foreign_handle_handle_closed,
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36 .done = ext_foreign_handle_handle_done,
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37 .title = ext_foreign_handle_handle_title,
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38 .app_id = ext_foreign_handle_handle_app_id,
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39 .identifier = ext_foreign_handle_handle_identifier // for now
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40 };
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41
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42 static void ext_toplevel_list_handle_toplevel(void* data, struct ext_foreign_toplevel_list_v1* list, struct ext_foreign_toplevel_handle_v1* handle) {
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43 std::vector<Window>* windows = reinterpret_cast<std::vector<Window>*>(data);
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44 if (!windows)
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45 return;
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46
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47 windows->push_back({0});
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48 ext_foreign_toplevel_handle_v1_add_listener(handle, &ext_handle_listener, &*windows->end());
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49 }
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50
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51 static void ext_toplevel_list_handle_finished(void*, ext_foreign_toplevel_list_v1*) {}
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52
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53 static const struct ext_foreign_toplevel_list_v1_listener ext_toplevel_list_listener = {
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54 .toplevel = ext_toplevel_list_handle_toplevel,
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55 .finished = ext_toplevel_list_handle_finished
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56 };
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57
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58 /* -- Global data -- */
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59 struct global_data {
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60 struct ext_foreign_toplevel_list_v1* ext_toplevel_list;
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61 std::vector<Window> windows;
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62 };
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63
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64 static void registry_handle_global(void* data, struct wl_registry* registry, uint32_t name, const char* interface, uint32_t version) {
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65 struct global_data* global = reinterpret_cast<struct global_data*>(data);
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66
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67 if (!std::strcmp(interface, ext_foreign_toplevel_list_v1_interface.name)) {
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68 // bind to ext-foreign-toplevel-list-v1
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69 global->ext_toplevel_list = reinterpret_cast<struct ext_foreign_toplevel_list_v1*>(wl_registry_bind(registry, name, &ext_foreign_toplevel_list_v1_interface, 1));
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70 ext_foreign_toplevel_list_v1_add_listener(global->ext_toplevel_list, &ext_toplevel_list_listener, &global->windows);
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71 }
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72 }
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73
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74 static void registry_handle_global_remove(void*, wl_registry*, uint32_t) {}
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75
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76 static const struct wl_registry_listener registry_listener = {
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77 .global = registry_handle_global,
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78 .global_remove = registry_handle_global_remove
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79 };
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80
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81 /* BAH! humbug... */
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82 struct sync_data {
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83 bool loop = true;
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84 int sync = 0;
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85
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86 struct global_data global = {0};
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87
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88 struct wl_callback* callback = nullptr;
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89 struct wl_display* display = nullptr;
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90 };
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91
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92 static void sync_handle_done (void* data, struct wl_callback* callback, uint32_t other_data);
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93 static const struct wl_callback_listener sync_callback_listener = {
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94 .done = sync_handle_done,
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95 };
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96
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97 static void sync_handle_done (void* data, struct wl_callback* callback, uint32_t other_data) {
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98 struct sync_data* sync = reinterpret_cast<struct sync_data*>(data);
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99
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100 wl_callback_destroy(callback);
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101 sync->callback = nullptr;
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102
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103 if (sync->sync == 0) {
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104 if (!sync->global.ext_toplevel_list) {
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105 std::cerr << "animia/wayland: Wayland server doesn't support ext-foreign-toplevel-list-v1!" << std::endl;
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106 sync->loop = false;
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107 return;
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108 }
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109
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110 sync->sync++;
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111 sync->callback = wl_display_sync(sync->display);
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112 wl_callback_add_listener(sync->callback, &sync_callback_listener, sync);
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113
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114 /* we may need another sync here if there are protocol extensions for
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115 * ext_foreign_toplevel_list.
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116 *
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117 * more info: https://git.sr.ht/~leon_plickat/lswt/tree/toplevel-info/item/lswt.c
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118 */
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119 } else {
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120 /* we've received everything we need! */
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121 sync->loop = false;
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122 }
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123 }
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124
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125 /* here comes the actual function we can use */
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126 bool EnumerateWindows(window_proc_t window_proc) {
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127 struct sync_data sync = {
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128 .display = wl_display_connect(NULL)
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129 };
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130
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131 if (!sync.display) {
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132 std::cerr << "animia/wayland: Can't connect to display" << std::endl;
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133 return false;
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134 }
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135
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136 struct global_data global;
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137
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138 struct wl_registry* registry = wl_display_get_registry(sync.display);
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139 wl_registry_add_listener(registry, &registry_listener, &sync.global);
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140
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141 sync.callback = wl_display_sync(sync.display);
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142 wl_callback_add_listener(sync.callback, &sync_callback_listener, &sync);
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143
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144 while (sync.loop && wl_display_dispatch(sync.display));
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145
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146 for (const auto& window : global.windows)
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147 if (!window_proc({0}, window))
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148 return false;
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149
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150 wl_display_disconnect(sync.display);
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151
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152 return true;
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153 }
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154
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155 }